Long ago, Robin lived with his family in the Huntington’s castle; that is, until one day the cruel Baron Alwine set fire to it, leaving only Robin and his cousins as the sole survivors. After escaping to Sherwood Forest, the group were taken under the wing of the hermit Friar Tuck and taught to survive in the harshest of conditions; but they are not alone in the forest! Little John and his gang of bandits are afoot, and they’ve kidnapped the beautiful Maid Marian! After discovering that they all share the same enemy -- Baron Alwine -- the entire gang (Marian included) decide to combine their forces for the greater good. Now, against tyranny and to protect the weak, Robin and friends will raise their swords and bows for justice!
Even tho I haven't seen every episodes of both I still see some different similarities, I can't explain it, but For-instance: Choppy from Princess Knight and Robin from well Robin Hood no Daibouken, Even tho Choppy is a young angel-in-training and Robin is a young hero, I can't explain why, but see it maybe you'll see what I mean.